Hvac system

Old HVAC Systems Are Being Replaced With Energy Efficient Systems

High-performance buildings exemplify the effectiveness of HVAC energy-efficiency retrofits achrnews.com, July 17, 2017 HVAC systems in commercial buildings consume a lot of energy, which is why many building owners and managers are looking at replacing their older, inefficient equipment with new high-performing systems. The buildings discussed below offer a good representation of the types of […]

ten emerging technologies

Investigating the Incremental Costs of Ten Emerging Technologies

Valerie Eacret, ERS, for Zondits ERS recently partnered with the Northeast Energy Efficiency Partnership (NEEP) to investigate the incremental costs of ten emerging technologies. The study includes full and incremental costs, as well as considerable, relevant technical information. Multiple research methods were used for each technology, including market actor interviews, web research, project invoice review, […]

variable refrigerant flow

The State of the Technology: Variable Refrigerant Flow Heat Pump Systems

Jesse Remillard and Valerie Eacret, ERS, for Zondits ERS is wrapping up a study for the Northeast Energy Efficiency Partnerships for which we performed primary and secondary cost research for a variety of key emerging technologies. One of these technologies was the variable refrigerant flow (VRF) heat pump (HP) system. Variable refrigerant flow (VRF) systems […]

carbon-neutral Christmas-lights-VRF space heaters

Ask the Expert: When Does VRF Make Sense? Part II

Technical Information on Variable Refrigerant Flow Systems Adam Allington and Chris Zimbelman for Zondits, December 17, 2015 Answer: A few months ago we asked the question when does VRF make sense? In short, the answer was that these systems are ideal in buildings with different rooms or zones that have varying occupancy schedules, activities, and temperature […]

carbon-neutral Christmas-lights-VRF space heaters

Ask the Expert: When Does VRF Make Sense?

When Does a Variable Refrigerant Flow System Make Sense? Chris Zimbelman and Adam Allington for Zondits, June 2, 2015 In order to understand what the best applications are for variable refrigerant flow (VRF) systems, we should back up and discuss their operation and benefits first. VRF systems are a sophisticated type of air-source (or occasionally […]

school lockers

Increasing HVAC Efficiency Under School Budget Constraints

Learning objective: Designing K-12 schools: HVAC systems CSE, March 27, 2015 CSE: What unique HVAC requirements do K-12 school structures have that you wouldn’t encounter on other structures? Ellis: Acoustical standards stand out as the differentiator, as system-based noise has detrimental impacts on learning, much more so than the same levels have on office production […]